compaq evo notebook n1050v series User Manual

							 
Using a BIOS Floppy Disk 
If you do not have a BIOS floppy disk, download the package from the Partnership Web site (see page 
vi) under Product Support Information in the Service and Support Library. Follow the instructions for 
creating the BIOS floppy disk. 
 
Caution 
Make sure to use the correct BIOS floppy disk for the notebook model you are repairing. The 
program does not verify the notebook model, so you could accidentally install the wrong BIOS. 
 
1. 
2. 
Insert the BIOS floppy disk in the floppy disk drive. 
Turn on the notebook and allow it to boot from the BIOS floppy disk. 
 If the notebook does not turn on at all, do the following to boot from the BIOS floppy disk: 
 
a. Unplug the AC adapter. 
 b. Press and hold Fn+B 
 c. Plug in the AC adapter. 
 d. Release Fn+B. 
Note: If the notebook will not boot from the BIOS floppy disk, try plugging the boot-block jumper 
into the notebook’s parallel port. See the wiring diagram below. 
3. The display goes blank for a minute or more while the BIOS is reprogrammed. 
Note: If you plugged in a boot block jumper, unplug it before the notebook automatically reboots. 
4. After the BIOS reprograms itself, check the BIOS version to make sure it is the latest version. 
If necessary, download the latest BIOS version and reprogram the BIOS IC. 
  
14
1
25
13
 
 Figure 2-22. Boot-Block Jumper 
Service Manual Removal and Replacement 2-37  
						

							 
Removing Other Components 
(Authorized Service Providers Only) 
Required Equipment 
• #0 and #1 Phillips screwdrivers. 
• Small flat-blade screwdriver. 
Removal Procedure 
1. 
2. 
Unplug the AC adapter, if present, and remove the battery. 
Remove the assemblies and follow the additional steps listed in the table below. 
Table 2-5. Removing Components 
Component Removal Procedure Additional Steps 
Battery, CMOS  Keyboard cover 
(page 2-10). 
Speaker (page 2-12). 
Switchboard PCA 
(page 2-13). 
Keyboard (page 2-13). 
CD/DVD (page 2-16). 
Display (page 2-17). 
Top case (page 2-20). 
Heatsink (page 2-26). 
Floppy (page 2-22). 
Motherboard (page 2-30). 
Reassembly Notes: After replacing the CMOS battery, 
set the correct time and date using the BIOS Setup 
utility or Date/Time in the Control Panel. 
Case, bottom See page 2-34.  
Case, top See page 2-20.  
CD/DVD drive See page 2-16.  
CPU module See page 2-28.  
Display assembly See page 2-17.  
Doors, PCMCIA Keyboard cover 
(page 2-10). 
Speaker (page 2-12). 
Switchboard PCA 
(page 2-13). 
Keyboard (page 2-13). 
CD/DVD (page 2-16). 
Display (page 2-17). 
Top case (page 2-20). 
Heatsink (page 2-26). 
Floppy (page 2-22). 
Motherboard (page 2-30). 
See page 2-34. 
Floppy drive See page 2-22.  
2-38 Removal and Replacement Service Manual  
						

							 
Component Removal Procedure Additional Steps 
Guide, HDD Keyboard cover 
(page 2-10). 
Speaker (page 2-12). 
Switchboard PCA 
(page 2-13). 
Keyboard (page 2-13). 
CD/DVD (page 2-16). 
Display (page 2-17). 
Top case (page 2-20). 
When replacing the HDD guide, make sure you only 
replace the two right screws. Do not replace the two left 
screws. 
Heatsink (with fan) See page 2-26.  
Keyboard See page 2-13.  
Panel, wireless Keyboard cover 
(page 2-10). 
Speaker (page 2-12). 
Switchboard PCA 
(page 2-13). 
Keyboard (page 2-13). 
CD/DVD (page 2-16). 
Display (page 2-17). 
Top case (page 2-20). 
Press the tabs on both sides of the panel and then lift it 
from the bottom case. 
PCA, I/R See page 2-24.   
PCA, left and right 
antennas (wireless 
models only) 
Keyboard cover 
(page 2-10). 
Speaker (page 2-12). 
Switchboard PCA 
(page 2-13). 
Keyboard (page 2-13). 
CD/DVD (page 2-16). 
Display (page 2-17). 
Top case (page 2-20). 
Heatsink (page 2-26). 
Floppy (page 2-22). 
Motherboard (page 2-30) 
Bottom case (page 2-34). 
Disconnect the front antenna PCA cables from the 
mini-PCI card (page 2-6). 
Be careful not to bend the metal tabs on the bottom 
case when removing or replacing either of the two 
antenna PCAs. 
PCA, motherboard See page 2-30.  
PCA, switchboard See page 2-13.  
Socket, PCMCIA Keyboard cover 
(page 2-10). 
Keyboard (page 2-13). 
CD/DVD (page 2-16). 
Display (page 2-17). 
Top case (page 2-20). 
Heatsink (page 2-26). 
Floppy (page 2-22). 
Motherboard (page 2-30). 
1. Remove the two screws attaching the socket to the 
motherboard. 
2. Unplug the PCMCIA socket from the motherboard. 
Speaker assembly See page 2-12.  
 
Service Manual Removal and Replacement 2-39  
						

							 
3 
Troubleshooting and Diagnostics 
This chapter includes troubleshooting and diagnostic information for testing the functionality of the 
notebook, and for identifying faulty components: 
• ASP support information 
• Troubleshooting information 
! Checking for customer abuse (page 3-3). 
! Troubleshooting the problem (page 3-3). 
! Verifying the repair (page 3-4). 
! Suggestions for troubleshooting (page 3-5). 
• Diagnostic tools 
! e-Diagtools diagnostic program (page 3-18). 
! Power-on self-test (page 3-19). 
! Sycard PCCtest 450/460 PC card (page 3-25). 
! Windows Management Instrumentation (page 3-26). 
! BIOS Setup utility (page 3-26). 
Support by Authorized Service Providers 
In the U.S., support of notebook computers by Authorized Service Providers (ASPs) is a purchasable 
option. Standard predefined models and standard special models do not include ASP support. The sales 
force has the option of creating models with ASP support using the specials process. 
The serial number label on the bottom of the notebook indicates the ASP support status for that model. 
See the following table. 
Table 3-1. ASP Support Options 
Serial Number Label ASP Support Status 
“NoASP” No reimbursement to ASP for parts or labor. However the ASP is authorized to 
repair the notebook, and reimbursement can be negotiated directly with the 
customer. 
“ASP” Parts and labor will be reimbursed to the ASP. 
 
In other countries, ASP support is standard in most situations—but you should check the marking on 
the serial number label to verify the ASP support status for that model. 
 
Service Manual Troubleshooting and Diagnostics 3-1  
						

							 
Troubleshooting 
The suggestions in this section can help isolate and repair the cause of a problem. To ensure quality 
repair, follow the basic troubleshooting steps shown below. 
  
 
Check the customer’s description
of the problem and any supporting
information.
Try to duplicate the customer’s
problem.
Troubleshoot the problem using:
  - Diagnostic tools.
  - Troubleshooting suggestions.
Verify the repair by testing the
functionality of the complete unit.
Check for customer abuse.
 
Figure 3-1. Basic Troubleshooting Steps 
3-2 Troubleshooting and Diagnostics Service Manual  
						

							 
Checking for Customer Abuse 
Some notebooks might appear to have been damaged by customer abuse. Use these guidelines to help 
determine if this is the case: 
• If the shipping box is seriously damaged, customer abuse cannot be declared. 
• If the damage could have a cause other than customer abuse, customer abuse cannot be declared. 
• If the notebook shows any of the following, customer abuse is declared: 
! Missing parts. 
! Broken plastic parts. 
! Parts not original to the notebook. 
! Damaged or missing keys on the keyboard. 
Table 3-3 lists additional criteria for determining customer abuse to specific parts of the notebook. 
 
Important 
Parts damaged by customer abuse are not covered by the warranty. 
 
Troubleshooting the Problem 
Record pertinent information about the notebook: 
• Model and serial number. 
• Operating system and version. 
• Software version (stored in hidden file c:\version.inf). 
• BIOS version. 
• Accessories and peripherals used. 
Analyze the problem: 
• Observe Symptoms. Using the customer’s information, try to duplicate the problem. Determine 
how the problem differs from proper behavior. Also, note the functions that do work properly. 
• Separate Problems. If there are multiple symptoms, separate them into distinct problems. 
• Consider Causes. Keep in mind possible causes for each problem. Use the diagnostic tools and 
troubleshooting suggestions to help find possible causes. 
! The e-Diagtools diagnostic program tests most of the notebook’s components using automatic 
and interactive tests, and is your primary troubleshooting tool. Other tools include the  
power-on self-test, WMI/Toptools (if installed), the BIOS Setup utility, and the Sycard 
PCCtest. Table 3-2 on page 3-5 shows how you can use these tools to isolate the cause of the 
notebook’s problem. 
! The troubleshooting suggestions on page 3-6 include general suggestions for repairing 
notebooks that show specific failure symptoms. 
Service Manual Troubleshooting and Diagnostics 3-3  
						

							 
Swapping modules that might be defective with others known to be good is generally an ideal way to 
find the module responsible for the problem. A failure symptom is rarely caused by more than one 
module, so you will not usually need to replace more than one to correct a particular failure. 
After you replace a module, the notebook will normally be in a confused state and lock up when you 
apply power. If this happens, press the reset button: this turns the notebook off, so that you can restart 
it in a known state. 
Verifying the Repair 
Before returning the repaired notebook to the customer, verify the repair by running the following 
tests: 
• e-Diagtools Basic Diagnostic Test. Run the basic test of the e-Diagtools diagnostic program 
(page 3-18). 
 –and– 
• Function Tests. Run tests that check the repaired function, such as those in e-Diagtool\
s 
(page 3-18). 
 –and– 
• Failed Tests. Run any other tests that failed during troubleshooting. 
3-4 Troubleshooting and Diagnostics Service Manual  
						

							 
Suggestions for Troubleshooting 
 Table 3-2. Scope of Diagnostic Tools 
Function e-Diagtools 
Power-On 
Self-Test 
Sycard 
PCCtest 450 
WMI/ 
Toptools 
(if installed) BIOS Setup 
Bootup  Tests  Describes Configures 
Processor  Tests  Describes  
Memory Tests Tests  Describes Describes 
Fan Tests     
Batteries  Tests (CMOS 
battery only) 
 Describes  
Display Tests   Describes Configures 
Hard disk Tests Tests  Describes Configures 
Floppy drive Tests* Tests  Describes Configures 
Keyboard Tests Tests  Describes  
Audio Tests     
Serial Tests*   Describes Configures 
Parallel Tests   Describes Configures 
LAN Tests   Describes Configures 
Modem     Configures 
Wireless     Configures 
Infrared    Describes Configures 
PS/2 port Tests†    Configures 
USB    Describes Configures 
Port replicator      
PCMCIA Tests  Tests Describes  
IEEE 1394 Tests     
AC adapter    Status  
* Test might be available only on certain units. † Use an external keyboard to exercise the port. Run the external 101-key test. 
 
Service Manual Troubleshooting and Diagnostics 3-5  
						

							 
If you cannot isolate the cause of a problem using the above diagnostic tools, use the suggestions in the 
following table to help find the problem. 
Table 3-3. Troubleshooting Suggestions 
Symptom 
Call Center: 
Suggestions 
Repair Center: 
Likely Causes 
Repair Center: 
Comments 
To help determine likely causes of a problem, determine which replaceable modules are involved in the system 
function and what roles they play: see the figure on page 1-27 and the table on page 1-28. 
Startup    
Does not boot on 
AC or battery. 
Check power source. 
Press and hold power button 
to turn notebook off, then 
press power button to turn 
notebook on. 
Unplug AC adapter, remove 
the battery and any PC cards, 
press reset button to turn 
notebook off, then reconnect 
power and try again. 
Do not use touch pad while 
booting or resuming. 
Remove all but one SDRAM 
module and try again. 
Reinsert any other SDRAM 
module and try again. 
AC adapter. 
SDRAM module. 
CPU module. 
Switchboard PCA. 
Motherboard. 
Display assembly. 
Hard drive. 
Check AC adapter. Remove 
all but one SDRAM module 
and try again. 
If power status light does not 
turn on, reprogram BIOS, 
replace top case, replace 
motherboard. 
If power status light turns on 
but display remains off, try 
external monitor. If monitor 
shows successful boot, 
replace display assembly. If 
monitor shows activity but 
BIOS does not complete, 
replace display assembly. If 
monitor is blank, replace 
switchboard PCA, replace 
motherboard. 
If power status light and 
display turn on, BIOS 
completes, but OS does not 
start from hard disk or floppy 
drive, replace CPU module, 
replace motherboard. If OS 
starts from floppy drive, 
reload hard drive, replace 
hard drive. 
Beeps once, spins 
hard disk, repeats, 
but does not boot. 
Make sure at least one 
SDRAM module is installed. 
SDRAM module.  
Does not boot on 
battery, but boots 
on AC. 
Make sure battery is properly 
installed and fully charged. 
Check battery level on battery 
LEDs. 
Check battery contacts. If 
available, try another battery. 
Battery or contacts. 
Motherboard. 
 
Does not boot from 
floppy drive. 
Make sure floppy disk is 
bootable. 
Use BIOS Setup to check 
default boot order. 
Floppy disk or floppy 
drive. 
Motherboard. 
Make sure floppy drive is 
installed and connected 
correctly. 
Does not boot from 
CD in CD/DVD 
drive. 
Make sure CD is bootable. 
Use BIOS Setup to check 
default boot order. 
Restart notebook. 
CD/DVD drive. 
Motherboard. 
Make sure CD/DVD is 
installed and connected 
correctly. 
3-6 Troubleshooting and Diagnostics Service Manual  
						

							 
Symptom 
Call Center: 
Suggestions 
Repair Center: 
Likely Causes 
Repair Center: 
Comments 
Sluggish startup or 
shutdown. 
Use Tools tab in disk’s 
Properties sheet to check 
hard disk. Use Disk 
Defragmenter to optimize 
hard disk. 
Delete temporary and 
unneeded files. 
Hard drive.  
Error message such 
as “Invalid system 
disk” or “Auto IDE 
error”. 
Check for disk in floppy drive. 
Check boot order in BIOS 
Setup. 
Remove and reinstall hard 
drive. 
Hard drive contacts. 
Hard drive. 
If notebook boots from floppy 
drive, check for corrupt files 
on hard drive, use Recovery 
CDs to reinstall factory 
software onto hard drive, 
replace hard drive. 
Password forgotten. Verify proper ownership, then 
follow removal procedure with 
owner and record appropriate 
data—see page 5-1. 
 User must call Technical 
Support and provide proof of 
ownership. Password 
removal is restricted to 
certain sites. See page 5-1. 
Power    
No power. Make sure charged battery is 
installed or AC adapter 
connected. 
Try another battery or AC 
adapter if available. 
AC adapter. 
Battery. 
Motherboard. 
 
Service Manual Troubleshooting and Diagnostics 3-7